.stuDiv1{
    width: 100%;
    height: 350px;
    border-bottom: 1px solid black;
}
.stuDiv2{
    width: 100%;
    height: 30px;
}
.stuDiv3{
    display: flex;
    justify-content: space-between;
}
.stuDiv4{
    width: 300px;
    height: 300px;
    margin-right: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(191, 250, 244, 0.71);
}
.dialogDiv{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0px;
    top: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
    visibility: hidden;
    background-color: rgba(0,0,0,0.1);
}
.landDiv{
    width: 700px;
    height: 500px;
    border: 1px solid black;
    background-color: rgba(191, 250, 244, 0.71);
}
.landDiv1{
    display: flex;
    width: 700px;
    height: 450px;
    border-top:1px solid black;
    border-bottom:1px solid black;
    justify-content: space-evenly;
    align-items: center;
    background-color: rgba(160, 232, 227, 0.71);

}
.delInfo{
    display: flex;
    width: 400px;
    height: 400px;
    border-top:1px solid black;
    border-bottom:1px solid black;
    justify-content: center;
    align-items: center;
    background-color: rgba(160, 232, 227);
}
.dialogDiv1{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0px;
    top: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
    visibility: hidden;
}
.landDiv2{
    width: 700px;
    height: 450px;
    border-top:1px solid black;
    border-bottom:1px solid black;
    background-color: rgba(160, 232, 227, 0.71);
}
.stu1{
    width: 300px;
    height: 150px;
    border: 1px solid black;
    margin-left: 200px;
}
.d1{
    margin-bottom:20px;
}
.d2{
    display: flex;
    margin-bottom: 20px;
    justify-content: space-evenly;
}
.d2>span{
    margin-right: 50px;
}
.d3{
    margin-left: 50px;
}
.i1{
    margin-top: 50px;
    margin-left: 300px;
}
.f1{
    width: 400px;
    height: 200px;
    margin-left: 150px;
    overflow: auto;
}
.f2{
    margin-left: 150px;
    margin-top: 30px;
}